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Semenov [28]
3 years ago
10

Are rational numbers closed under squaring?

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
5 0

Answer:

The integers are "closed" under addition, multiplication and subtraction, ... The rational numbers are "closed" under addition, subtraction, and multiplication

Step-by-step explanation:

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Consider the recursively defined function below. f(1)=-5.25 f(n)=f(n-1)+1.75, for n=2,3,4,.... Create the first five terms of th
andrezito [222]
N=1→f(n)=f(1)=-5.25 (First term)
f(n)=f(n-1)+1.75, for n=2, 3, 4, ...

Second term:
n=2→f(2)=f(2-1)+1.75=f(1)+1.75=-5.25+1.75→f(2)=-3.5

Third term:
n=3→f(3)=f(3-1)+1.75=f(2)+1.75=-3.5+1.75→f(3)=-1.75

Fourth term:
n=4→f(4)=f(4-1)+1.75=f(3)+1.75=-1.75+1.75→f(4)=0

Fifth term:
n=5→f(5)=f(5-1)+1.75=f(4)+1.75=0+1.75→f(5)=1.75

Answer:
Sequence of the terms:
First, second, third, fourth, fifth:
-5.25, -3.5, -1.75, 0, 1.75
4 0
3 years ago
A swimmer swam the 50-meter freestyle in a time of 21 seconds. What was the speed to the nearest tenth of a meter per second?
Mila [183]

The answer would be 2.4 meters per second. To find this, you would divide the 50 meters by 21 seconds. It equals 2.380952, and rounds to 2.4m/s.

5 0
3 years ago
Read 2 more answers
A concert arena has 48 rows, each with 8 seats and another 54 rows, each with 9 seats. How many seats does the concert arena hav
Phoenix [80]
The answer is D because 48*8= 384 and 54*9=418 add 384 and 418 the answer is 870.
5 0
4 years ago
Read 2 more answers
Simplify: 5/4 times 22/45
Finger [1]
5/4 x 22/45

110/ 180

11/18
6 0
3 years ago
While taking inventory at her pastry shop, Aisha realizes that she had 1/4 of a box of baking powder yesterday, but the supply i
Verdich [7]

Answer:

1/12

Step-by-step explanation:

\frac{1}{4} - \frac{1}{6}

\frac{6 - 4}{24}

\frac{2}{24}

Converting to its simplest form, divide numerator and denominator by 2 = 1/12

8 0
3 years ago
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